Skip to content

Most plant problems start below the surface

Soil & Potting

Mixing your own potting media, understanding perlite and vermiculite, choosing pots that drain, and letting go of the drainage-layer myth.

3 articles · page 1 of 1

Photo: Soil by HolgerK at English Wikipedia · Public domain · via Wikimedia Commons

Pile of white perlite granules on a terracotta surface
Soil6 min read

Perlite vs Vermiculite: They Do Opposite Things

Both are white-ish mineral granules sold on the same shelf for the same price, and people treat them as interchangeable. One adds drainage; the other adds water retention.

Read more →
Assorted rounded gravel stones of varying sizes
Soil6 min read

The Gravel Layer Myth: Why It Makes Drainage Worse

Putting stones in the bottom of a pot is the most widely repeated piece of plant advice there is. It has been known to be counterproductive since the 1950s, and the physics is not complicated.

Read more →